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Rack
2.1 Rack UR5213 (6DD1682-0CH2)
2.1.3
Control and display elements
X1
3 signaling relays, 230 V floating potential (3 x 2 contacts)
SHUTDOWN MODE
A system shutdown mode can be set in accordance with the switch position as response to
the failure of one or two fans.
The operating mode setting is indicated by the "SHUTDOWN MODE" LED on the front
panel.
LED
The four LEDs signal the operating state of the rack.
RESET
You can restart all modules by pressing the submerged pushbutton (rack RESET).
BATTERY
Backup battery compartment (1 x AA lithium battery)
X2
Line voltage connection
Front panel
Switch S1 (viewed from the top of the fan tray)
Figure 2-2
Front view of the fan tray
40
SIMATIC TDC hardware
System Manual, 12/2013, A5E01114865-07
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